<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">悦听影音后台管理系统</h3>
      <el-form-item prop="username">
        <el-input
            v-model="loginForm.username"
            type="text"
            size="large"
            auto-complete="off"
            placeholder="账号">
          <template #prefix>
            <svg-icon icon="user"/>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
            v-model="loginForm.password"
            type="password"
            size="large"
            auto-complete="off"
            placeholder="密码"
            @keyup.enter="handleLogin">
          <template #prefix>
            <svg-icon icon="password"/>
          </template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-row :gutter="20">
          <el-col :span="16">
            <el-input
                v-model="loginForm.code"
                type="text"
                size="large"
                auto-complete="off"
                placeholder="验证码">
              <template #prefix>
                <svg-icon icon="verificationCode"/>
              </template>
            </el-input>
          </el-col>
          <el-col :span="8">
            <el-image :src="captchaImage" @click="refreshCaptchaImage"/>
          </el-col>
        </el-row>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
            size="large"
            type="primary"
            style="width:100%;"
            @click.prevent="handleLogin"
            @keydown.enter="keyDown">
          <span>登 录</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2013-2025 <a href="http://www.java1234.vip" target="_blank">java1234.vip</a> 版权所有.</span>
    </div>
  </div>
</template>

<script setup>
import {onMounted, onUnmounted, ref} from 'vue';
import requestUtil, {getServerUrl} from '@/util/request';
import store from '@/store';
import qs from 'qs';
import {ElMessage, ElLoading} from 'element-plus';
import router from '@/router';
import Cookies from 'js-cookie';
import {encrypt, decrypt} from '@/util/jsencrypt';

const loginRef = ref(null);
const loginForm = ref({
  username: "",
  password: "",
  code: "",
  rememberMe: false
});
const captchaImage = ref(getServerUrl() + 'captcha');
const loginRules = {
  username: [{required: true, trigger: "blur", message: "请输入您的账号"}],
  password: [{required: true, trigger: "blur", message: "请输入您的密码"}]
};
const loading = ref(null);

const refreshCaptchaImage = () => {
  captchaImage.value = getServerUrl() + 'captcha?d=' + new Date() * 1;
}

const handleLogin = () => {
  loginRef.value.validate(async (valid) => {
    if (valid) {
      // 显示登录中提示框
      loading.value = ElLoading.service({fullscreen: true, lock: true, text: '登录中，请稍后...'});
      const res = await requestUtil.post("compareCode", {code: loginForm.value.code});
      if (res.data.code === 200) {
        // 勾选了记住密码，在cookie中设置记住用户名和密码
        if (loginForm.value.rememberMe) {
          Cookies.set("username", loginForm.value.username, {expires: 30});
          Cookies.set("password", encrypt(loginForm.value.password), {expires: 30});
          Cookies.set("rememberMe", loginForm.value.rememberMe, {expires: 30});
        } else {
          // 否则移除
          Cookies.remove("username");
          Cookies.remove("password");
          Cookies.remove("rememberMe");
        }
        let result = await requestUtil.post("login?" + qs.stringify(loginForm.value));
        let data = result.data;
        if (data.code === 200) {
          const token = data.authorization;
          const menuList = data.menuList;
          const currentUser = data.currentUser;
          store.commit('SET_MENULIST', menuList);
          store.commit('SET_TOKEN', token);
          store.commit('SET_USERINFO', currentUser);
          router.replace("/");
          // 隐藏登录中提示框
          loading.value.close();
        } else {
          // 隐藏登录中提示框
          loading.value.close();
          ElMessage.error(data.msg);
        }
      } else {
        // 隐藏登录中提示框
        loading.value.close();
        ElMessage.error(res.data.msg);
      }
    } else {
      console.log("验证失败");
    }
  });
};

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCookie();

//点击回车键登录
const keyDown = (e) => {
  if (e.keyCode === 13 || e.keyCode === 100) {
    handleLogin()
  }
}

onMounted(() => {
  //绑定监听事件
  window.addEventListener('keydown', keyDown)
});

onUnmounted(() => {
  //销毁事件
  window.removeEventListener('keydown', keyDown, false)
});

</script>

<style lang="scss" scoped>
a {
  color: white
}

.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.png");
  background-size: 100% 100%;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
  font-size: large;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;


    input {
      display: inline-block;
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }

}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
